[PATCH 2/2] cxgbi: get rid of gl_skb in cxgbi_ddp_info.
From: Karen Xie <kxie@xxxxxxxxxxx>
Remove gl_skb from cxgbi_ddp_info as it is only used by cxgb3i.
Signed-off-by: Karen Xie <kxie@xxxxxxxxxxx>
---
drivers/scsi/cxgbi/cxgb3i/cxgb3i.c | 51 +++++-------------------------------
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 2 -
drivers/scsi/cxgbi/libcxgbi.c | 15 +----------
drivers/scsi/cxgbi/libcxgbi.h | 3 --
4 files changed, 8 insertions(+), 63 deletions(-)
diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
index a129a17..e2362b9 100644
--- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
+++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
@@ -1108,10 +1108,11 @@ static int ddp_set_map(struct cxgbi_sock *csk, struct cxgbi_pagepod_hdr *hdr,
csk, idx, npods, gl);
for (i = 0; i < npods; i++, idx++, pm_addr += PPOD_SIZE) {
- struct sk_buff *skb = ddp->gl_skb[idx];
+ struct sk_buff *skb = alloc_wr(sizeof(struct ulp_mem_io) +
+ PPOD_SIZE, 0, GFP_ATOMIC);
- /* hold on to the skb until we clear the ddp mapping */
- skb_get(skb);
+ if (!skb)
+ return -ENOMEM;
ulp_mem_io_set_hdr(skb, pm_addr);
cxgbi_ddp_ppod_set((struct cxgbi_pagepod *)(skb->head +
@@ -1136,56 +1137,20 @@ static void ddp_clear_map(struct cxgbi_hba *chba, unsigned int tag,
cdev, idx, npods, tag);
for (i = 0; i < npods; i++, idx++, pm_addr += PPOD_SIZE) {
- struct sk_buff *skb = ddp->gl_skb[idx];
+ struct sk_buff *skb = alloc_wr(sizeof(struct ulp_mem_io) +
+ PPOD_SIZE, 0, GFP_ATOMIC);
if (!skb) {
- pr_err("tag 0x%x, 0x%x, %d/%u, skb NULL.\n",
+ pr_err("tag 0x%x, 0x%x, %d/%u, skb OOM.\n",
tag, idx, i, npods);
continue;
}
- ddp->gl_skb[idx] = NULL;
- memset(skb->head + sizeof(struct ulp_mem_io), 0, PPOD_SIZE);
ulp_mem_io_set_hdr(skb, pm_addr);
skb->priority = CPL_PRIORITY_CONTROL;
cxgb3_ofld_send(cdev->lldev, skb);
}
}
-static void ddp_free_gl_skb(struct cxgbi_ddp_info *ddp, int idx, int cnt)
-{
- int i;
-
- log_debug(1 << CXGBI_DBG_DDP,
- "ddp 0x%p, idx %d, cnt %d.\n", ddp, idx, cnt);
-
- for (i = 0; i < cnt; i++, idx++)
- if (ddp->gl_skb[idx]) {
- kfree_skb(ddp->gl_skb[idx]);
- ddp->gl_skb[idx] = NULL;
- }
-}
-
-static int ddp_alloc_gl_skb(struct cxgbi_ddp_info *ddp, int idx,
- int cnt, gfp_t gfp)
-{
- int i;
-
- log_debug(1 << CXGBI_DBG_DDP,
- "ddp 0x%p, idx %d, cnt %d.\n", ddp, idx, cnt);
-
- for (i = 0; i < cnt; i++) {
- struct sk_buff *skb = alloc_wr(sizeof(struct ulp_mem_io) +
- PPOD_SIZE, 0, gfp);
- if (skb)
- ddp->gl_skb[idx + i] = skb;
- else {
- ddp_free_gl_skb(ddp, idx, i);
- return -ENOMEM;
- }
- }
- return 0;
-}
-
static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk,
unsigned int tid, int pg_idx, bool reply)
{
@@ -1316,8 +1281,6 @@ static int cxgb3i_ddp_init(struct cxgbi_device *cdev)
}
tdev->ulp_iscsi = ddp;
- cdev->csk_ddp_free_gl_skb = ddp_free_gl_skb;
- cdev->csk_ddp_alloc_gl_skb = ddp_alloc_gl_skb;
cdev->csk_ddp_setup_digest = ddp_setup_conn_digest;
cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx;
cdev->csk_ddp_set = ddp_set_map;
diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
index 8c04fad..5b1f078 100644
--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
@@ -1425,8 +1425,6 @@ static int cxgb4i_ddp_init(struct cxgbi_device *cdev)
cxgbi_ddp_page_size_factor(pgsz_factor);
cxgb4_iscsi_init(lldi->ports[0], tagmask, pgsz_factor);
- cdev->csk_ddp_free_gl_skb = NULL;
- cdev->csk_ddp_alloc_gl_skb = NULL;
cdev->csk_ddp_setup_digest = ddp_setup_conn_digest;
cdev->csk_ddp_setup_pgidx = ddp_setup_conn_pgidx;
cdev->csk_ddp_set = ddp_set_map;
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index 17dcada..bfeb0b6 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -1277,12 +1277,6 @@ static int ddp_tag_reserve(struct cxgbi_sock *csk, unsigned int tid,
return idx;
}
- if (cdev->csk_ddp_alloc_gl_skb) {
- err = cdev->csk_ddp_alloc_gl_skb(ddp, idx, npods, gfp);
- if (err < 0)
- goto unmark_entries;
- }
-
tag = cxgbi_ddp_tag_base(tformat, sw_tag);
tag |= idx << PPOD_IDX_SHIFT;
@@ -1293,11 +1287,8 @@ static int ddp_tag_reserve(struct cxgbi_sock *csk, unsigned int tid,
hdr.page_offset = htonl(gl->offset);
err = cdev->csk_ddp_set(csk, &hdr, idx, npods, gl);
- if (err < 0) {
- if (cdev->csk_ddp_free_gl_skb)
- cdev->csk_ddp_free_gl_skb(ddp, idx, npods);
+ if (err < 0)
goto unmark_entries;
- }
ddp->idx_last = idx;
log_debug(1 << CXGBI_DBG_DDP,
@@ -1363,8 +1354,6 @@ static void ddp_destroy(struct kref *kref)
>> PPOD_PAGES_SHIFT;
pr_info("cdev 0x%p, ddp %d + %d.\n", cdev, i, npods);
kfree(gl);
- if (cdev->csk_ddp_free_gl_skb)
- cdev->csk_ddp_free_gl_skb(ddp, i, npods);
i += npods;
} else
i++;
@@ -1407,8 +1396,6 @@ int cxgbi_ddp_init(struct cxgbi_device *cdev,
return -ENOMEM;
}
ddp->gl_map = (struct cxgbi_gather_list **)(ddp + 1);
- ddp->gl_skb = (struct sk_buff **)(((char *)ddp->gl_map) +
- ppmax * sizeof(struct cxgbi_gather_list *));
cdev->ddp = ddp;
spin_lock_init(&ddp->map_lock);
diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h
index c57d59d..23cbc58 100644
--- a/drivers/scsi/cxgbi/libcxgbi.h
+++ b/drivers/scsi/cxgbi/libcxgbi.h
@@ -131,7 +131,6 @@ struct cxgbi_ddp_info {
unsigned int rsvd_tag_mask;
spinlock_t map_lock;
struct cxgbi_gather_list **gl_map;
- struct sk_buff **gl_skb;
};
#define DDP_PGIDX_MAX 4
@@ -536,8 +535,6 @@ struct cxgbi_device {
struct cxgbi_ddp_info *ddp;
void (*dev_ddp_cleanup)(struct cxgbi_device *);
- void (*csk_ddp_free_gl_skb)(struct cxgbi_ddp_info *, int, int);
- int (*csk_ddp_alloc_gl_skb)(struct cxgbi_ddp_info *, int, int, gfp_t);
int (*csk_ddp_set)(struct cxgbi_sock *, struct cxgbi_pagepod_hdr *,
unsigned int, unsigned int,
struct cxgbi_gather_list *);
--
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